Weft-replenishing mechanism for picks and pick looms



June 24, 1930. 5 A, NELSON 1,766,831

WEFT -REPLIENISHING MECHANISM FOR PICKS AND PICK LOOMSv Filed Aug. 1, 1928 5 Sheets-Sheet 1 Jaa' s. A. NELSON y WEFT REPLENISHING MECHAISM FOR PICKS AND PICK LOOMS June 24, 1930.

June 24,1930. l s. A. NELSON WEFT REPLEISHING MECHANISM FOR PICKS AND PICK LOOMS Filed Aug. l, 1928 5 Sheets-Sheet I5 NVE/V TO/P SAMUEL. A. NEL-60N 4 v7- afl-vega June24, 1930. Y A mLsoN 1,766,331

wEFT REPLEmsHiNG MECHNISM FOR PICKS AND PICK Looms Filed `Aug. l, 1928 5 Sheets-Sheet 4 June 24', 1930.

S. A. NELSON WEFT REPLENISHING MECHANISVM FOR PICKS AND PICK LOOMS Filed Aug. l, 1928 5 Sheets-Sheet 5 Y/T/l/E/VTOIP bmw-de,

Patented .lune 24, 1930 sacue'rrsgf AssIGNoR 'rol CBOMPTQN; e

xNoWLns Loom WORKS; anwalt-ESTER; MASMGHUSETTS; Af CORPORATION E MASSACHUSETTS:

A'tirelire-1w.2L.Invertire 1101.- rICKS AND CK Iiels A This`V invention relates tfo-y an improved Wett replenishingj mechanism; pa'rtffclrll'arly` adapted for'use on a4 pick and" pick" loom; e

It is the general objectief my inventionfto provide improved mechanism by' which" any desired weft carrier o'rb'obloiIi1v ma ber'efr leased and transferiedv on the'. pick' follow"-` ing indication and Withouti .or dei laying the operation of th regiarpicking' mechanism ofthe*loern.`

A= further obj ect' is to* provi-de mechanism by which the `transfer" is efected in two i steps' or stages and in which" the latter stage; of' the transfer may be4 fffectedgfduring" the" shifting moven'ie'ntl oftliebores. l y e To the attainmentoftliisobject; I pro-'" vide" :an intermediate receiver" or carrier which lessives the indicated were' aja 'er While fheshune'iisfm signant; er delivers the W'e'xftL carrier"v to" the shuttle -et front center, said' receiver" orr carriermovable vertically with theshultldbdes" and being at; alli tin'i'esfhorizeiitallyr 'aligned therewith; y

4 My invention' further relates t'erneei ments'and combinationsofparts be hereinafter described and morefpartic larly pointed out in thej' appended Claims. AVA preferredV form of thefin'ventonf shovvninftlie drawingsfin which Fig; l4 islavl side elevation offa'loonienii bodying my improvements;

Figi 2 lis-a" detail A`pleinview",4 inf the direction'of the arrow/la ig 1" Fie SS ivbottbm vewsleokl. rection of'thearrow 3' in FigQZ; f Y' Figa-eis aA plan view-,Of Pftinsfof a" magazine, looking. in th"d`i'rcitn Q'fthl-M' row 4*'i`nffFig1; V

Fig. is errent eievsicn; ofj pjagnjs qf uit' magazine meliarism linking@ die@ tionof the`arro`w Fig'. fig" Y Fig; 6 is a se'ctionalplaln' view" ofi the" magazine and associated parts',` taken alo'ng the line-G-in Fig. 1;. Figs. 7 and` 8 are detailsectional `front elevations', taken along tlie'linesfL-r-? and 848l inv Fig; 6;

Fig. 9jis afront elevation of' thegiiiter-i Fig. l0 is a sectional? planv View thereof,` takenl alongV the lineI 1 0''10` in Fig. 9';

Figli-1I is a plan view; ofcertainl parts-of the carrier, to be described;l l Y Fig." 12^is anfenlarged side' elevation of certaina't'uat'ing connect'ioiis;-` f,.Fig. 13' isfe sectionalf side" elevation4 the-re- Figs', 14 and 15 are' tran'sve'ise` sectional elevations,-taken along 4the lineslllllland 15";l5'inl5`ig;12; f

Fig. i6 is a sectional. endfelevatiom-taken along1tlie' line-16416 in Fig. 13";1 f Figs-.1T7 18- andv 19' arev sectional pla views ofl thefintermeidiate receiver or carrier` and illlustrate successive stages'in theftrans fer operationg.andl Figi is a perspective?viewV of'- aI weft carrier holder tobe described.

Referring. Vparticula-rly to Fig. 1,1 have indicated parts oyal pickv and pick loom comprising .aloom frame 30, a magazine M,- a-plurality of drop boxes; 3l mounted onthe usual lifter rod- 32 and a' bottom 0r cam. shaft 33 which, as usual, makes onefrevolufY tion for ever)r tvvo` picks of the loom.

Magazine mecicm'cm y -The magazineis ofthe multi-color `stationary tyre. and is in general substantially Similar .tb the magasine showin in the prior patent tQWyman, NO- 970,591,1Ssued Septemberf 2051310. y l I, have. Showny the magazine M as provided With three vertical compartments 35V (Fig. 4.) but it.' sheuid be' ,understood that my invention is not limitedto ai particular number of compartments and that' eithermore orless compartments may. Abe used as' desired, :the`v n'u'rnbgerV of compartments coinmplyffcfrspoj'dingitb;ui@ number Q ffshut; tle's used, in?the'looiii;y

The weft Q'afreff in" each Cleretlet' are supported on rocliiii'gf, (cradles (notr Showny andere :selectively released; up@ i'n-, dieatin olf-tfraii'sfein 1 f A shat`36- (Fig'sl'l andre) is slidablyf ed in beariiiglsion the I nag'az'ine M isiprovded' With a7 groovedcollar 37 (Fig. 1) engagd'by'a fork ac'the'up'per' end of a bell crank 38 pivoted at 39 on the loom frame and connected by a cord or other device 40 to the pattern mechanism of the loom, so that the longitudinal position of the rod 36 will always correspond to the shuttle about to become active.v

A finger 42 (Fig. 4) is fixed on the rod 36 and is moved with the rod 36 into posi? of transfer. i

For a more complete description ofi the operation of the magazine, reference is made i an actuating rod 73. The rod 73 is detach-p` to the patent to Vyman above cited. A

The connector (Fig. 1) is pivoted at its lower end to an arm 51-swinging about a fixed pivot 52 and having an -upwardly extending portion 53 which has a pin and slot connection with an arm 54 on the usual indicator rod55. A The rod 55 extends along the breast beam to the opposite sideof the loom and receives a rocking movement uponindication rof weft exhaustion by the detecting mechanism, not shown.

Detecting mechanism for pick and pick looms is well known and any such suitable mechanism may be utilized for rocking the shaft 55 upon indication of-weft exhaustion, the detecting mechanism and theactuati'ng mechanism for the shaft 55 forming no part of my present invention and being well known in the art.

Transfer meeluufwlsm As the bobbin is released from a selected compartmentof themagazine, it falls upon 3 fixed guide-ways 60 and 61 (Fig. 6) formed on a frame or support 62 for a transfer member 63. Said transfer member is slidable in dovetailed guide-ways64'in the:

stand 62 and is provided with an end portion 65 to engage the butt of the lbobbin and with an end portion 66 spacedtherefrom and adapted to engage the tip of the bobbinv mounted n pin and slotconnection at its lower end with ably connected with a rod74,substantially aligned therewith and pivoted at its` rearv end to a cam lever (Figjl) swinging about a fixed pivot 76 and having a roll' seated in the cam groove 78 of a cam 79, mounted on the cam shaft 33 previously de scribed.

Act/wetting connector amt control abearingSl formed on a bracket 82 fixed to the loom'side 30.

The sleeve 8O has anadjustingY or' stop screw 84, engaging the end of the bearing `-81 and thus determining'the-rearward position of the rod 73. A spring 85 is connected toman arm-'86 mounted on the rod 73 and acts to hold the. rod and sleeve yieldingly in rearward position. n

The sleeve 8O receives the forward end of the rod V74in a recess 87 .(Fig. 13) and a screw 88 inthe sleeve `extends into a longitudinal recess or key-way 89 in the rod '74, preventing angular movement thereof' and limiting longitudinal separation of the rod 74and 'sleeve 8 0. y

Therod 74'is regularly reciprocated by the cani 78 but commonly slides freelyV in the recess 87 of` the sleeve 80. A stud 90 is mountedv in a transverse bearing 91 in the sleeve and isf'normally held out of the path of thev rod 74 by a spring 92 engaging a collar 93 onthestud v90. The frontend of the rod 74 is provided with ashoulder94 (Fig. 13) and the lower end ofthe stud 90 is provided with a head 95, adapted to be caught under the shoulder 94 whenthev Studis depressed into the recess: 87. f lVhen the stud is depressed and caught by the shoulder l94, it forms a rigid connection between the rod74 and the sleeve 80, and thus causes motion to be transmitted to the actuating lever 7l. y' n ,"Arocker arm 96 (Fig. 14) is pivoted at 97 on' the fixed bearing 81 and has a longitudinally extended end portion 98 engaging the upper. end of the stud 90 in every longi tudinal position of the sleeve 80.

The rocker arm 96 isconnected to a wire or'cordf99 (Fig. 1 which extends around afguide pulley 100 and is connected to a downwardly extending arm 10,1.pivoted at 52 and movable" with the arms 51 and 53 previously described. y y

Upon'i'ndication of weft exhaustion, all of said arms are moved in a clockwise direction, as'viewed in Fig. 1, and the connector 99 is thus pulled upward, rocking the arm 96, and depressing the stud 90 to render the rod 74 operative; Q

I ntermedz'ate receiver 01' carrier The intermediate receiver or carrier 110 (Fig. 9) 'constitutes one of the outstanding features of my presentvinvention. This carr1er'110` 1s mounted 1n vertical guideways A. bunter 115a i'sfmonnted.l on the inner end of: the slide 115` and isengaged by some portion of t'he'dropbox 31' as the lay. moves fon-ward. when the slide 115.is.in rear-.ward position.4 The. cooperative effect of these parts during transfer will be hereinafter de-v scribed.

The `carrierllOfis. supported on an auxili-V any. lifter rod. 120.2 (Fig 9), whichis connected atrits=lower end, asindicated at 121` inFig. 1,.for vertical movement simultaneously with movement of the drop box lifterrodi32; The connection is such thatA as the lay. swings toward or away from front center, the bobbin holding` springs 116willV be moved vertically in unison with the-'drop boxes-:andwill be held'substantially. in horizont-alf alignmenty therewith. l

iVhenever a weft carrierV is to. be transferred, the slide 115 and=spring116 corresponding to the active shuttle is moved rearward ay shortadistance... For,` this purpose; I: provide a lever 122 (Figs. Gand 8) having an upwardly and rearwardly projecting end portion123'adapted to engage the slid. ..115v corresponding to the active shuttle.. rlhis lever 122 is pivot/'ed' at 124 andhas apin andislot` connection toa secondlever125pivoted at 126'and supporting g a cross .stud 127 havingazlaterally extended head1128 (Figs- 6and 8*);

The head 12d-is positionedzfor engagement by the upper end. ofthe actuatinglever `71l asusaid-i lever.: swings rearwardto move the transfer member 6.3; When thelever. 71 engages the; head; 128, itf rocks-the levers 125' and# 122 and causes the end 12S-:of the lever 122-. to push the corresponding.` slide 115" quicklyrearward, shifting the spring plunger: 118 to [the forward recess-117 .1

Springs=129 (Fig. 8) on `the studs1124-iand 126 act t'o yieldingfly maintain the levers in the"` inoperative position indicated infull lin-es i'nFig. 62

Aaiwvlz'ary. transfer member.

The intermediate,- carri'er 110 is' provided with. an auxiliary transfer member.: 130

(Eiga` 9i toa 11') 1 supported on. two ,plungers 6.5; 131' slidableaxially'inbearings 'inthe carL rien 110. and provided with springs L132rr pressing the plungers 13.1 and auxiliary member 13.0l yiel'dingly'to the left in. Fig.. 9..' The. left.: hand ends of the plungers; 13.1 are. seated in bosses` Ona' head plate V13d-posin tioned: for. engagement by the upper end a lever 134 (Fig. 9) pivoted at 135 (Fig. 1), and` having a depending portion 136. offset at its lower end,.as indicated' ait-13.7 .in Fig'.` 2,. and lj orovided withl a roll. 138' engagedrgby a. cam'platet139; mounted on'the. rod 7 3. pre# viouslyY described. Y v

The'cam plate 139 is-normally positioned as indicated'in Fig. 2, pressing the cam roll 138l outwarch andy causing the' lever 134 to hold. the auxiliary transfer 4member 1.30v in the operative position'. shown. in Figs. 9i and Upon'. indicationjofl transfer, however, the rod 73 moves forward, carrying with it the cam 139 and permitting the springs 13 2atoV withdraw` the heady 130 tothe position indicated in Fig. 17.. l-Vhenin this'position, a bobbin B mayY be'A pushed freely rearward past Vthe member 130 untilit is graspedby. one ofithepairsof springs 116.. L

The member 130 is provided with three pairs of spaced projections lliOwhichhelp to. guide the bobbins inl their rearwar travel.

Operation of is as follows :V

Upon indicationof transfer, one off the cradles in the magazine is rocked to'release a weft carrierandito allow ittoxfall on to thesupportingsurfaces and 61 (Fig. 6) in the-path of the trans-fer member 63. j At the same time the cord 995 (Fig. 1) i is `pulled upward to depressy the stud' 90v (Fig. 18) and thus render the actuating llever 71' op-` erative.` The levery .134? (Fig. 9j) islsiniultaneously withdrawn, permitting the inember 130 to move to inoperative position.-

The released bobbin is then pushed rearward by. the transfer memberI 63S until-it' enters between one' of the pairs of spring jawsf116, .which jaws are moved' further` Vrearwardiby the action of the:V levers 125'and 1221(Fig.v 6). f Y Thisecompletesi `the first stage off the transfer; the spring j aws 1161" and Vthe' slide 115: being yi'eldingly. held Tin' rearward posi-- tionby one. of the springA plunge'rs 118,? as indicated in Fig. 18, and these. operations being completed asv` the. loom l Vpasses Vback center.k v '7 The vplunger 73 i then returnsto itsrearwardf` position, actuating. the leven-1134 to? movesthe member 180 to the. right and-in' front ofthe butt .off the bobbin, as indicated in Fig. 18'.' As the layfcomes forward, the

iso

bobbin B is held in rearward position by the member 130 and engages the exhausted weft carrier B (Fig. 19) forcing the same rearward out of the shuttle S, the bobbin B being simultaneously inserted in the shuttle and the transfer being thus completed.

During this same forward movement of the lay, the bunter ll on the slide 115 is engaged by the forwardly moving dropt boxes 31 and is pushed forward, the bobbin-holding spring jaws 116 passing over and under the member 130. This action removes the slide 115 and spring jaws 116 from the path of the forwardly moving shuttle, while the new bobbin is held from substantial forward movement by its engagement with the member 130. The engagement of the drop boxes 31 with the bunter 115u also has the effect of resetting the slide 115 in normal forward position.

As the intermediatel receiver or carrier 110 is mounted to move vertically with the dropk boxes, it will be seen that the second stage of the transfer may be carried out, regardless of the vertical position of t-he boxes, and in fact during the vertical shifting of the boxes, as the bobbin to be transferred is held continuously in horizontal alignment with the shuttle which is toreceive the bobbin.

I am thus able to complete the transfer on the same pick on which the indicated shuttle is received at the magazine side of the loom, and this transfer will be satisfactorily completed whether or not the indicated shuttle remains active for the ensuing pick, and with no alteration in the speed of operation of the loom.

Having thus described my'invention and the advantages thereof, I do not wish to be limited to the details .herein disclosed, otherwise than as set forth in the claims, but what I claim is 1. In a weft replenishing loom, a plurality of shifting shuttle boxes, a multicolor magazine associated therewith, means to release a selected weft carrier therefrom corresponding to the shuttle about to be picked to the magazine side of the loom, means to move said weft carrier rearward to anintermediate position as said shuttle is boxed, and fixed means to resist forward movement of said weft carrier fromA said intermediate position when engaged by a substantially exhausted weft carrier in a boxed shuttle thereby causing rearward ejection thereof.

2. In a weft replenishing loom, a plurality of shifting shuttle boxes adapted to receive shuttles open at their front and rear sides, means to advance a selected weft carrier to a position in the path of a shuttle approaching front center, and means to hold such weft carrier from forward movement and in fixed position when engaged by a weft carrier in said shuttle.

3. In a weft replenishing loom, a plurality of shifting shuttle boxes adapted to receive shuttles open at their front and rear sides, a transfer member by which a selected weft Carrier is'moved' rearward to an intermediate position, an p auxiliary transfer member, means to move said auxiliary member from operative vposition while said weft carrier is moved rearward, and means to thereafter restore said auxiliary member to a fixed position to resist forward movement of said weft carrier when engaged by a weft carrier in the shuttle to be replenished.

4. In a weft replenishingloom, an intermediate bobbin receiving device normally positioned forward of the path of shuttle movement, means to insert a bobbin in said device upon indication of weft exhaustion and to move said device rearward into the path of shuttle movement, and means to thereafter and hold said bobbin in substantially fixed position and prevent forward movement of said bobbin when said bobbin is engaged by a substantially exhausted bobbin in a forwardly moving shuttle.

5. In av weft replenishing loom, an intermediate bobbin receiving device, a transferrer, means for moving said transferrer rearward to insert a bobbin in said device upon indication of weft exhaustion, and additional means rendered operative as said transferrer moves rearward and effective to move said bobbin receiving device rearward into the path of a forwardly moving shuttle.

6. In a weft replenishing loom, an intermediarybobbin receiving device normally positioned forward of the path of shuttle movement, means to insert a bobbin in saidr device upon indication of weft exhaustion and to move said device rearward into the path of shuttle movement, means to hold said bobbin in substantially fixed rearward position when engaged by a substantially exhausted bobbin in a forwardly moving shuttle, and means to reset said bobbin receiving device in normal forward position.

7. In a weft replenishing loom,'an intermediate bobbin receiving device normally positioned forward of the path of shuttle movement, means to insert a bobbin in said device upon indication of weft exhaustion and t-o move said device rearward into the path of shuttle movement, means to hold said bobbin in substantially fixed rearward position when engaged by a substantially exhausted bobbin in a forwardly moving shuttle, and means to move said bobbin receiving device forward to release the fresh bobbin for transfer, while thus holding said bobbin in fixed rearward position.

8. In a weft replenishing loom, a lay, a magazine, an intermediate slide having bobbin holding spring jaws, means to insert a fresh bobbin in said slide and to move said slide rearward upon indication of weft exhaustion, a member adapted to be thereafter moved to a fixed position forward of said bobbin and eective to prevent substantial forward movement of said bobbin, and means engaged by said lay effective to move said slide forward while said bobbin is held by said member from forward movement.

9. In a weft replenishing loom, a lay, a magazine, an intermediate slide having bobbin holding spring jaws, means to insert a fresh bobbin in said slide and to move said slide rearward upon indication of weft exhaustion, a member adapted to be thereafter positioned forward of said bobbin and effective to prevent substantial forward movement of said bobbin, and means engaged by said lay effective to move said slide forward while said bobbin is held from forward movement, said jaws passing above and below said member and -supporting the fresh bobbin until grasped by the shuttle springs.

l0. In a weft replenishing loom, a magazine, a plurality of shifting shuttle boxes at the magazine endv of the loom, an intermediate weft carrier receiver, means to transfer a selected weft carrier from said magazine to said receiver', means to move said weft Y carrier and receiver rearward to place said weft carrier 1n the path of movement ofthe active shuttle7 an auxiliary transfer member,

`and means to move said member axially of the weft carrier after the rearward move'- ment of said carrier and into a position directly in front of said carrier, whereby said. weft carrier is held from forward movement and ejects the weft carrier in the active shuttle by direct engagement therewith.

In testimony whereof I have hereunto aiiixed my signature.

SAMUEL A. NELSON. 

